42 EFFECTS OF THIRST AND STARVATION UPON ALLIGATORS. 



Specific Gravities, Water, and Solid Constituents of tlie Blood. 





Specific gra- 

 vity of blood. 



Water in 1000 

 parts of blood. 



Water in 1000 

 parts of se- 

 rum. 



Solid constitu- 

 ents in 1000 

 parts of blood. 



Solid constitu- 

 ents in 1000 

 parts of se- 

 rum. 



Solid constitu- 

 ents in serum 

 of 1000 parts 

 of blood. 



Alligator not starved . 

 Alligator starved . 



10.46 

 10.56 



823.86 

 803.43 



909.20 

 909.20 



116.14 

 196.51 



90.80 

 90.80 



82.05 

 80.24 



Moist Blood- CorimscJes and Liquor Sanguinis in 1000 ^3ffr^s of Blood. 





Moist blood- 

 corpuscles. 



Water in 

 moist blood- 

 corpuscles. 



Solid constitu- 

 ents in moist 

 blood-cor- 

 puscles. 



Liquor san- 

 guinis. 



Water in 

 liquor san- 

 guinis. 



Solid constitu- 

 ents in liquor 

 sanguinis. 



Alligator not starved . . 

 Alligator starved . 



364.08 

 451.68 



273.06 

 338.16 



91.02 

 112.92 



635.92 

 548.32 



550.80 

 464.61 



85.12 

 83.65 



Organic and Inorganic Constituents in 1000 parts of Blood. 





Water in 1000 

 parts of blood. 



Dry organic 

 constituents 

 of the blood- 

 corpuscles in 

 1000 parts 

 of blood. 



Albumen and 

 extractive 

 matters. 



Fat. 



Fibrin. 



Fixed saline 

 constituents. 



Alligator not starved . . 

 Alligator starved . 



823.86 

 803.43 



86.39 

 106.80 



13.01 

 14.02 



5.02 

 2.00 



3.01 

 3.41 



8.65 

 10.34 



If we assume that the blood of both alligators had originally the same relative 

 amounts of organic and inorganic constituents, we may note the following changes 

 during abstinence from food and drink : — 



The amount of water in the blood was diminished, and the solid constituents 

 relatively, not absolutely, increased. 



The number of blood-corpuscles in 1000 parts of blood had increased, whilst in 

 the whole amount of blood originally possessed by the animal they had diminished. 



The relative amount of solid constituents in the serum of 1000 parts of blood, 

 had neither increased nor diminished ; whilst tv\'0-thirds of the amount originally 

 existing in the blood of the reptile had been consumed. Therefore, the constituents 

 of the serum wasted more rapidly than the blood-corpuscles. 



The fats and extractive matters were diminished. 



The amount of fibrin was relatively increased from 3.07 to 3.41. Its relative 

 increment did not correspond with the concentration of the blood. It was con- 

 sumed more rapidly than the blood-corpuscles, and not so rapidly as the solid con- 

 stituents of the serum. 



The relative increase in the fixed saline constituents correspond, in part, with 

 the concentration of the blood. 



In comparing the blood of one animal with that of another, we determine the 

 influences of starvation and thirst, relatively and not absolutely. If our facts and 

 conclusions were drawn from a fevv^ isolated instances, we would be liable to error. 



